In the past year, the "ammonia security" in the entire refrigeration equipment industry has set off a hot word. As early as fifty or sixty years ago, ammonia is widely used as a refrigerant in the Western French international industrial refrigeration field, and has been in use since. After several decades of development, ammonia system technology from the theory will have been very mature, but because of the high cost of automatic installation of the system in China, often simplified as manual or semi-automatic.
However, since 2013, the media for ammonia system cold storage accidents and casualties of the continuous emergence of a large extent, the ammonia system in China's large-scale refrigeration industry in the big development. Even some of the local regulatory authorities to promote the development of ammonia to adjust the cooling project, the development of the ammonia system caused a heavy blow.
Compared with fluorine system, the present advantage of ammonia system is incomparable, the first is ammonia as a natural working substance, its GWP is 0, ODP is 0, it is the most ideal and the most environmentally friendly refrigerant in large refrigeration system. The second one is the better thermal performance of ammonia, the unit capacity and the single unit capacity, and has the advantage of high efficiency and energy saving in large scale refrigeration projects, especially in large cold storage applications. Third, the price is far lower than the ammonia refrigerant freon, the initial investment is lower.